What are pollutants of greatest concern and who is at risk?

Is carbon a metal that can conduct electricity?

In the stream, water waves bunched up as the water flowed by. As we moved the disturbance up stream, the water bunched up even more. An airplane can travel at the same speed as sound does, about 340 m/s.

A stone is dropped from a bridge and hits the pavement below in 2 seconds. what is the velocity of the stone when it hits the pavement

The dimensions for force are the product of mass and length divided by time squared. Newton's second law states that force equals the product of mass and acceleration. What are the dimensions of acceleration? T2 T2/L L/T2 L/T

If an object is stationary the forces acting upon are ... Unbalanced, weak, or balanced?

A rock with a mass of 1000 kg falls to the earth. what would the force be?

What is an example of a system and describe the energy flow through it.

If a substance cannot be physically separated into component parts, it is likely to be

Gasoline being converted into heat energy and mechanical energy is an example of : A) Energy transformation B) Radiation C) Renewable resources

We use electrical devices leopard deuce motion, light, and sound. Which aspect of energy explains why these devices are possible?